Antenna device including radome and base station including antenna device

Abstract

The present disclosure relates to a communication method and system for converging a 5 th -Generation (5G) communication system for supporting higher data rates beyond a 4 th -Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. According to an embodiment o, an antenna device in a wireless communication system includes: an antenna module; and a radome covering at least a part of the antenna module, wherein the antenna module includes a first radiator disposed on one surface of the radome and at least one second radiator spaced apart from the first radiator by a specified distance on the one surface to form a loop of the first radiator, wherein the at least one second radiator includes a plurality of gaps opening each of the loops.

What is claimed is: 
     
       1. An antenna device for use in a wireless communication system comprising:
 a printed circuit board (PCB) including a feeding portion configured to supply a signal; 
 a radiating portion; and 
 a radome covering at least the PCB and being spaced apart from the PCB, 
 wherein the radiating portion includes a first radiator disposed on a surface of the radome, and at least one second radiator disposed on the surface of the radome and spaced apart from the first radiator, 
 wherein the at least one second radiator is spaced apart from the first radiator by a specified distance on the surface of the radome to form at least one loop around the first radiator, 
 wherein the at least one second radiator includes a plurality of gaps opening each of the at least one loop, and 
 wherein the plurality of gaps include at least two gaps per polarization of the signal supplied from the feeding portion. 
 
     
     
       2. The antenna device of  claim 1 , wherein the plurality of gaps comprise:
 at least two gaps formed at a first point and a second point where a first extension line extending to penetrate the at least one second radiator in a first direction and a loop are in contact; and 
 at least two gaps formed at a third point and a fourth point where a second extension line extending to penetrate the at least one second radiator in a second direction orthogonal to the first direction and the loop are in contact. 
 
     
     
       3. The antenna device of  claim 2 , wherein the feeding portion of the PCB comprises:
 a first feeding portion comprising a conductive material configured to supply the signal to the first radiator and the at least one second radiator, along the first direction; and 
 a second feeding portion comprising a conductive material configured to supply the signal to the first radiator and the at least one second radiator, along the second direction. 
 
     
     
       4. The antenna device of  claim 2 , wherein the plurality of gaps further comprise:
 at least two gaps formed at a fifth point and a sixth point where each of a third extension line extending to penetrate the at least one second radiator in a third direction and the loop are in contact; and 
 at least two gaps formed at a seventh point and an eighth point where each of a fourth extension line extending to penetrate the at least one second radiator in a fourth direction and the loop are in contact. 
 
     
     
       5. The antenna device of  claim 1 , wherein the feeding portion is configured to supply the signal to each of the first radiator and the at least one second radiator. 
     
     
       6. The antenna device of  claim 1 , wherein the radome is spaced apart from the PCB by a predetermined distance and is disposed to cover the PCB from outside of the antenna device. 
     
     
       7. The antenna device of  claim 1 , wherein the at least one second radiator includes a first loop spaced apart from the first radiator by a specified distance,
 wherein the radiating portion further includes a plurality of capacitors connecting the first radiator and the first loop, and 
 wherein a number of the plurality of capacitors is equal to a number of gaps included in the first loop. 
 
     
     
       8. The antenna device of  claim 1 , wherein the surface of the radome is an upper surface or a lower surface of the radome,
 wherein the feeding portion is disposed on a surface of the PCB, and 
 wherein the surface of the PCB faces the lower surface of the radome. 
 
     
     
       9. The antenna device of  claim 1 , wherein a gap-coupled structure in which the feeding portion disposed on a surface of the PCB is indirectly coupled to the radiating portion on the surface of the radome is formed without a contact between the feeding portion and the radiating portion. 
     
     
       10. A base station comprising an antenna device configured for use in a wireless communication system,
 wherein the antenna device comprises: 
 a printed circuit board (PCB) including a feeding portion configured to supply a signal, 
 a radiating portion, and 
 a radome covering at least the PCB and being spaced apart from the PCB, 
 wherein the radiating portion includes a first radiator disposed on a surface of the radome and at least one second radiator disposed on the surface of the radome and spaced apart from the first radiator, 
 wherein the at least one second radiator is spaced apart from the first radiator by a specified distance on the surface of the radome to form at least one loop around the first radiator, 
 wherein the at least one second radiator includes a plurality of gaps opening each of the at least one loop, and 
 wherein the plurality of gaps include at least two gaps per polarization of the signal supplied from the feeding portion. 
 
     
     
       11. The base station of  claim 10 , wherein the plurality of gaps comprise:
 at least two gaps formed at a first point and a second point where a first extension line extending to penetrate the at least one second radiator in a first direction and a loop are in contact; and 
 at least two gaps formed at a third point and a fourth point where a second extension line extending to penetrate the at least one second radiator in a second direction orthogonal to the first direction and the loop are in contact. 
 
     
     
       12. The base station of  claim 11 , wherein the feeding portion of the PCB further comprises:
 a first feeding portion comprising a conductive material configured to supply the signal to the first radiator and the at least one second radiator, along the first direction; and 
 a second feeding portion comprising a conductive material configured to supply the signal to the first radiator and the at least one second radiator, along the second direction. 
 
     
     
       13. The base station of  claim 11 , wherein the plurality of gaps further comprise:
 at least two gaps formed at a fifth point and a sixth point where a third extension line extending to penetrate the at least one second radiator in a third direction and the loop are in contact; and 
 at least two gaps formed at a seventh point and an eighth point where a fourth extension line extending to penetrate the at least one second radiator in a fourth direction and the loop are in contact. 
 
     
     
       14. The base station of  claim 10 , wherein the feeding portion is configured to supply the signal to each of the first radiator and the at least one second radiator. 
     
     
       15. The base station of  claim 10 , wherein the radome is spaced apart from the PCB by a predetermined distance and is disposed to cover the PCB from outside of the antenna device. 
     
     
       16. The base station of  claim 10 , wherein the at least one second radiator includes a first loop spaced apart from the first radiator by a specified distance,
 wherein the radiating portion further includes a plurality of capacitors connecting the first radiator and the first loop, and 
 wherein a number of the plurality of capacitors is equal to a number of gaps included in the first loop. 
 
     
     
       17. The base station of  claim 10 , wherein the surface of the radome is an upper surface or a lower surface of the radome,
 wherein the feeding portion is disposed on a surface of the PCB, and 
 wherein the surface of the PCB faces the lower surface of the radome. 
 
     
     
       18. The base station of  claim 10 , wherein a gap-coupled structure in which the feeding portion disposed on a surface of the PCB is indirectly coupled to the radiating portion on the surface of the radome is formed without a contact between the feeding portion and the radiating portion.